One of the most frustrating problems you can encounter with a modern motor car is a failed or failing air conditioning system. It is only then that you become aware of how much you rely on the comfort of air conditioning when driving in hot summer climates. You also discover just how good or bad car service centers are at diagnosing and repairing such a problem. Air conditioning in most cars will usually perform reliably and effectively for a good deal of time after the purchase of a new car. However, this is dependent on the standard of installation of the air conditioning components and the reliability of the service repair center that maintains your car for you. My experience is that the ability of mechanics to service and repair car air conditioning varies greatly between dealerships and air conditioning specialists. One is not necessarily better than the other and both may fail to diagnose certain problems in the air conditioning system and/or effectively repair the system.